How do I create a regularly-spaced array of values in MATLAB?

arrays, matlab, vector

Solution

There are a couple of ways you can do this:

Using the colon operator:

startValue = 1;
endValue = 10;
nElements = 20;
stepSize = (endValue-startValue)/(nElements-1);
A = startValue:stepSize:endValue;

Using the `linspace` function (as suggested by Amro):

startValue = 1;
endValue = 10;
nElements = 20;
A = linspace(startValue,endValue,nElements);

Keep in mind that the number of elements in the resulting arrays includes the end points. In the above examples, the difference between array element values will be `9/19`, or a little less than `0.5` (unlike the sample array in the question).

Problem

How do I make an array that's defined with a start point, an end point, and a total array size? Something like an array that goes from 1 to 10 that's 20 elements long. For example, the array could look something like: ``` 1 1.5 2 2.5 3 3.5 ... ```

Original source